公开(公告)号：EP2841758B1

公开(公告)日：2016-05-18

申请号：EP13709135.1

申请日：2013-03-14

申请人： Robert Bosch GmbH

发明人： KRESCHEL, Henning ,  SUTTER, Kai ,  RAU, Andreas ,  GRUENBERGER, Andreas ,  CHRIST, Wilhelm ,  HORN, Matthias ,  SCHWARZ, Thomas ,  STOECKLEIN, Wolfgang ,  PAUER, Thomas ,  AMELANG, Stephan ,  ZERLE, Lorenz ,  RETTICH, Andreas ,  RUECKLE, Markus ,  BEIER, Marco ,  VILLMANN, Alexander ,  WACHTER, Philipp ,  SIAUW, Sven

IPC分类号： F02M61/14 ,  F02M61/16

CPC分类号： F02M61/14 ,  F02M61/168

公开(公告)号：EP2171256B1

公开(公告)日：2011-05-11

申请号：EP08802914.5

申请日：2008-06-17

申请人： Robert Bosch GmbH

发明人： ZEISS, Bernhard ,  CHRIST, Wilhelm ,  KUEBLER, Ralf ,  HOCH, Alfred ,  HERRMANN, Matthias ,  ULRICH, Lars

IPC分类号： F02M61/16 ,  F02M61/18 ,  B21K1/24 ,  C21D1/10

CPC分类号： F02M61/168 ,  B21K1/24 ,  C21D1/10 ,  C21D1/18 ,  C21D1/25 ,  F02M61/18 ,  F02M2200/02 ,  F02M2200/9061 ,  Y02P10/253 ,  Y10T29/49405 ,  Y10T29/49409

摘要： The invention relates to a method for producing an injection valve for liquids, preferably an injection valve for injecting fuel into a combustion chamber of an internal combustion engine, which injection valve has a valve body (1), with a valve seat (6) which is formed therein, and a valve needle (5) which interacts with the valve seat (6) in order to open and close at least one injection opening (7). The injection valve is produced by means of the following method steps: producing the valve body (1) from steel, hardening the valve body (1), annealing a partial region of the valve body (1) at an annealing temperature T2. The device for carrying out the method according to the invention comprises an inductive annealing generator which generates a suitable alternating current for operating a coil, in the magnetic field of which coil the valve body can be heated for annealing (figure 2).

公开(公告)号：EP1527276B1

公开(公告)日：2006-12-20

申请号：EP03787585.3

申请日：2003-04-29

申请人： ROBERT BOSCH GMBH

发明人： TESCHNER, Werner ,  WESTPHAL, Claus ,  CHRIST, Wilhelm ,  BOTHE, Ulrich ,  REDLICH, Alexander

IPC分类号： F02M61/18

CPC分类号： F02M61/1873 ,  F02M61/12 ,  F02M61/168 ,  F02M61/18 ,  F02M61/1806 ,  F02M61/1893 ,  F02M63/0001 ,  F02M2200/304

摘要： The invention relates to a fuel-injection valve for internal combustion engines comprising a valve body (1), in which a plunger-shaped valve needle (5) is located in a bore (3). The bore (3) is delimited at the combustion chamber end by a valve seat (9), which co-operates with a valve sealing surface (7) that is configured on the valve needle (5) in such a way that the opening of at least one injection orifice (11) configured at the combustion chamber end of the valve body (1) is controlled by the longitudinal displacement of the valve needle (5). Micro-depressions are configured on the valve sealing surface (7) and/or the valve seat (9).

摘要翻译： 用于内燃机的燃料喷射阀技术领域本发明涉及一种用于内燃机的燃料喷射阀，其包括阀体（1），柱塞形阀针（5）位于孔（3）中。 所述孔（3）在燃烧室端部由阀座（9）限定，所述阀座与阀针（5）上配置的阀密封表面（7）配合，使得 通过阀针（5）的纵向位移来控制构造在阀体（1）的燃烧室端部处的至少一个喷射孔（11）。 阀密封面（7）和/或阀座（9）上配置有微小凹陷。

公开(公告)号：EP1509693B1

公开(公告)日：2006-11-29

申请号：EP03740006.6

申请日：2003-05-15

申请人： ROBERT BOSCH GMBH

发明人： CHRIST, Wilhelm ,  DITTUS, Bernd ,  BOECKING, Friedrich

IPC分类号： F02M61/04 ,  F02M61/10

CPC分类号： F02M61/1873 ,  F02M61/042 ,  F02M61/12 ,  F02M61/18 ,  F02M61/1806 ,  F02M61/1866

摘要： A fuel injection valve comprising a valve body (1) wherein a valve needle (5) having a longitudinal axis (15) is arranged in a bore (3) such that it is longitudinally displaceable. A conical valve seat (11) is arranged on the combustion-chamber end of the bore (3). A pressure chamber (19) which can be filled with fuel is formed between the valve needle (5) and the wall of the bore (3), extending as far as the valve seat (11). A valve sealing surface (7) is formed on the valve needle (5), cooperating with the valve seat (11) in order to control at least one injection opening leading from the valve seat (11) and an annular groove (35) extends therein on a radial plane of the valve needle (5). The downstream edge of the annular groove (35) is embodied in the form of a sealing edge (38) and is constantly hydraulically connected to the pressure chamber (19).

公开(公告)号：EP2496822B1

公开(公告)日：2014-04-16

申请号：EP10763670.6

申请日：2010-09-30

申请人： Robert Bosch GmbH

发明人： GROTHE, Katja ,  CHRIST, Wilhelm ,  GANSERT, Klaus-Peter ,  KREHER, Thilo ,  RUECKERT, Frank, Ulrich ,  SUENDERHAUF, Gerhard ,  ZECK, Fridolin ,  SCHILLING, Marcus ,  KLING, Kerstin

IPC分类号： F02M61/16 ,  F02M61/10 ,  F02M61/12

CPC分类号： F02M61/10 ,  F02M61/12 ,  F02M61/168

公开(公告)号：EP2496822A1

公开(公告)日：2012-09-12

申请号：EP10763670.6

申请日：2010-09-30

申请人： Robert Bosch GmbH

发明人： GROTHE, Katja ,  CHRIST, Wilhelm ,  GANSERT, Klaus-Peter ,  KREHER, Thilo ,  RUECKERT, Frank, Ulrich ,  SUENDERHAUF, Gerhard ,  ZECK, Fridolin ,  SCHILLING, Marcus ,  KLING, Kerstin

IPC分类号： F02M61/10 ,  F02M61/12

CPC分类号： F02M61/10 ,  F02M61/12 ,  F02M61/168

摘要： The invention relates to a fuel injector for an internal combustion engine, comprising a valve body (2), in which a valve needle (1) is arranged in a longitudinally movable manner, which with a valve needle tip (3) designed on the valve needle (1) cooperates with a valve seat of the valve body (2) that delimits a fuel-filled pressure chamber between the valve body (2) and valve needle (1), wherein a fuel flow to at least one injection opening is enabled or interrupted by means of the cooperation of the valve needle (1) with the valve seat (2), wherein the fuel is supplied continuously or discontinuously to the pressure chamber, and wherein a closing throttle is designed in the pressure chamber between the valve needle (1) and the valve body (2). According to the invention, a fuel injector is provided, wherein the closing process of the valve needle (1) is optimized by a closing throttle that is improved over the prior art. This is achieved by designing the closing throttle on a circumferentially sealing collar (8, 8a) using at least one segment-shaped recess (9, 9a), and the collar (8, 8a) is part of the valve needle guide region (11).

公开(公告)号：EP2470771A1

公开(公告)日：2012-07-04

申请号：EP10734739.5

申请日：2010-07-19

申请人： Robert Bosch GmbH

发明人： LEUKART, Michael ,  GROTHE, Katja ,  CHRIST, Wilhelm ,  SUENDERHAUF, Gerhard

IPC分类号： F02M61/12 ,  F02M61/18 ,  F02M61/10

CPC分类号： F02M61/10 ,  F02M61/12 ,  F02M61/18 ,  F02M61/1886

摘要： The invention relates to a fuel injection valve for injecting fuel into a combustion chamber of an internal combustion engine, having a nozzle needle (1) which is guided, such that it can perform a stroke movement, in a central bore (2) of a nozzle body (3) in order to open up or close off at least one injection opening (4), wherein the nozzle needle (1) interacts, by means of an encircling sealing region (5) formed on the combustion-chamber-side end thereof, with a sealing seat (6) that runs conically and is formed on the combustion-chamber-side end of the nozzle body (3). According to the invention, the sealing seat (6) that runs conically has an opening angle (α
1 ) of between 30° and 50°, preferably of between 40° and 50°.

摘要翻译： 本发明涉及一种用于将燃料喷射到内燃机的燃烧室中的燃料喷射阀，该燃料喷射阀具有喷嘴针（1），该喷嘴针（1）在一个中心孔（2）中被引导成能够执行行程运动 （1）通过形成在燃烧室侧端部（5）上的环绕密封区域（5）相互作用而打开或关闭至少一个喷射开口（4） 与形成在喷嘴体（3）的燃烧室侧端部上的锥形延伸的密封座（6）连接。 根据本发明，锥形延伸的密封座（6）具有在30°与50°之间，优选在40°与50°之间的开口角（α1）。

公开(公告)号：EP2171256A1

公开(公告)日：2010-04-07

申请号：EP08802914.5

申请日：2008-06-17

申请人： Robert Bosch GmbH

发明人： ZEISS, Bernhard ,  CHRIST, Wilhelm ,  KUEBLER, Ralf ,  HOCH, Alfred ,  HERRMANN, Matthias ,  ULRICH, Lars

IPC分类号： F02M61/16 ,  F02M61/18 ,  B21K1/24 ,  C21D1/10

CPC分类号： F02M61/168 ,  B21K1/24 ,  C21D1/10 ,  C21D1/18 ,  C21D1/25 ,  F02M61/18 ,  F02M2200/02 ,  F02M2200/9061 ,  Y02P10/253 ,  Y10T29/49405 ,  Y10T29/49409

摘要： The invention relates to a method for producing an injection valve for liquids, preferably an injection valve for injecting fuel into a combustion chamber of an internal combustion engine, which injection valve has a valve body (1), with a valve seat (6) which is formed therein, and a valve needle (5) which interacts with the valve seat (6) in order to open and close at least one injection opening (7). The injection valve is produced by means of the following method steps: producing the valve body (1) from steel, hardening the valve body (1), annealing a partial region of the valve body (1) at an annealing temperature T2. The device for carrying out the method according to the invention comprises an inductive annealing generator which generates a suitable alternating current for operating a coil, in the magnetic field of which coil the valve body can be heated for annealing (figure 2).

公开(公告)号：EP1546547A1

公开(公告)日：2005-06-29

申请号：EP03737862.7

申请日：2003-04-25

申请人： ROBERT BOSCH GMBH

发明人： OHNMACHT, Markus ,  MATTES, Patrick ,  TESCHNER, Werner ,  CHRIST, Wilhelm ,  BOECKING, Friedrich

IPC分类号： F02M61/18

CPC分类号： F02M61/1873 ,  F02M61/18 ,  F02M61/1866

摘要： The invention relates to a fuel injection valve for internal combustion engines with a valve body (1), in which a drilling (3) is embodied, defined at the combustion chamber end thereof by a conical valve seat (12). A piston-like valve needle (5) is arranged in the drilling (3), such as to be longitudinally displaced, which comprises a valve sealing surface (10) at the combustion chamber end thereof which has two conical surfaces (20; 22). The second conical surface (22) is arranged on the combustion chamber side of the first conical surface (20) and an annular groove (25) runs between the conical surfaces (20; 22) the edge thereof facing away from the combustion chamber acting as a sealing edge (27) on location of the valve sealing surface (10) on the valve seat (12). Recesses are embodied on the valve seat (12) and/or on the valve sealing surface (10), hydraulically connecting the annular groove (25) with a section between the valve seat (12) and valve sealing surface (10) on the combustion chamber side of the annular groove (25).

公开(公告)号：EP1373710A1

公开(公告)日：2004-01-02

申请号：EP02727267.3

申请日：2002-03-26

申请人： ROBERT BOSCH GMBH

发明人： MACK, Gerhard ,  NARIN, Taner ,  RAPP, Holger ,  KUNZI, Ulrich ,  HEINECKE, Ralf ,  CHRIST, Wilhelm ,  BOECKING, Friedrich ,  FLEINER, Wolfgang ,  FINK, Manfred

IPC分类号： F02M61/12 ,  F02M47/02

CPC分类号： F02M61/12 ,  F02M47/027

摘要： The invention relates to a fuel-injection valve for internal combustion engines, comprising a valve body (3), in which a bore (7) is configured. A valve seat surface (10) and at least one injection opening (9) are configured at the combustion chamber end of the bore (7), whereby the injection opening (9) connects the bore (7) to the combustion chamber of the internal combustion engine. A nozzle needle (12) is positioned in the bore (7) so that it can be longitudinally displaced, said needle having a sealing surface (17) on the combustion chamber end, which co-operates with the valve seat surface (10) and thus controls the injection opening (9). The nozzle needle (12) has a central longitudinal bore (19), in which an internal needle (14), which is fixed in position in relation to the valve body (3), is located. At least one section of the length of the nozzle needle (12) is guided on the internal needle (14), in such a way that the nozzle needle (12) is retained exactly in the centre of the bore (7) at all times.

摘要翻译： 用于内燃机的燃料喷射阀技术领域本发明涉及一种用于内燃机的燃料喷射阀，其包括阀体（3），其中构造有孔（7）。 一个阀座表面（10）和至少一个喷射孔（9）构造在孔（7）的燃烧室端部，由此喷射孔（9）将孔（7）连接到内部的燃烧室 内燃机。 喷嘴针（12）定位在孔（7）中，使得它可纵向移动，所述针在燃烧室端部上具有与阀座表面（10）配合的密封表面（17），和 从而控制注射开口（9）。 喷嘴针（12）具有中央纵向孔（19），内部针（14）位于该中央纵向孔（19）中，该内部针（14）相对于阀体（3）固定就位。 喷嘴针（12）的长度的至少一部分在内部针（14）上被引导，使得喷嘴针（12）始终精确地保持在孔（7）的中心 。